class Restaurant:
    def __init__(self,restaurant_name,cuisine_type):
        self.restaurant_name = restaurant_name
        self.cuisine_type    = cuisine_type
        self.number_served   = 0

    def describe_restaurant(self):
        print(f"{self.restaurant_name} {self.cuisine_type}")
    def open_restaurant(self):
        print("This resturant is OPENING!")
    def set_number_served(self,num):
        if num>=0:
            self.number_served = num
            print(self.number_served)
        else:
            print("The number should bigger than zero!")
class IceCreamStand(Restaurant):
    def __init__(self,restaurant_name,cuisine_type):
        super().__init__(restaurant_name,cuisine_type)
        self.flavors = ['sweet','solt','nice','a little fine']
    def showicecream(self):
        print(f"name:{self.restaurant_name},{self.cuisine_type},{self.flavors[3].title()}")

ice_soult = IceCreamStand('icecream restaurant','ice cold')
ice_soult.showicecream()